{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-104430 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-104430 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-104430 is a high-severity denial of service vulnerability in ZcashFoundation zebra, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-104430 and fix it if it is affected.\n\nWhat it is: CVE-2026-104430 is a high-severity denial of service vulnerability in ZcashFoundation zebra, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-104430 in the wild and no public exploit code.\n\nAffected product: ZcashFoundation zebra. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-104430/ (Markdown: https://insights.sbomify.com/CVE-2026-104430/index.md)","id":"CVE-2026-104430","markdown":"https://insights.sbomify.com/CVE-2026-104430/index.md","name":"CVE-2026-104430","record":{"aliases":["GHSA-2prc-cj5x-4443","GHSA-4c53-mmm8-cf87"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zcash node software","requires_auth":"none","summary":"Remote attackers can cause Zebra nodes to stall off the chain by broadcasting blocks that trigger a consensus divergence due to incorrect signature operation counting.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-628","name":"Function Call with Incorrectly Specified Arguments"}],"description":"Zebra zebrad 4.5.0 and zebra-script 7.0.0 count P2SH redeem script signature operations in legacy mode rather than zcashd's accurate P2SH mode, overcounting CHECKMULTISIG preceded by OP_1 through OP_16 as 20 sigops and causing a consensus divergence. Remote attackers can broadcast P2SH spends using low-threshold multisig redeem scripts so that a block zcashd accepts exceeds Zebra's inflated MAX_BLOCK_SIGOPS count, causing Zebra nodes to reject it and stall off the chain.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Zebra 4.5.0 Consensus Split via P2SH Sigop Overcount","id":"CVE-2026-104430","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Zebra before 6.0.0 Denial of Service via Synchronous Script FFI Verification","id":"CVE-2026-104431"},"packages":[],"prev":{"headline":"Zebra before 6.0.0-rc.0 Per-Peer Mempool Admission Bypass via P2P tx Messages","id":"CVE-2026-104429"},"products":["zebra"],"published":"2026-10-02","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-02","vendors":["ZcashFoundation"]},"summary":"Remote attackers can cause Zebra nodes to stall off the chain by broadcasting blocks that trigger a consensus divergence due to incorrect signature operation counting.","url":"https://insights.sbomify.com/CVE-2026-104430/"}